EA: VISIBILITY_DISTANCE
Status:
STD 2005/06/07
Code:
1536
Concept definition:
The greatest distance in a given <
DIRECTION
> at which it is just possible to see and identify with the unaided eye either: (1) in the daytime, a prominent dark <
OBJECT
> against the sky at the horizon or (2) at night, a known, preferably unfocused, moderately intense <
LIGHT
>; visibility distance.
Attribute value type:
REAL
Unit equivalence class label:
LENGTH
Reference type:
IR
Reference:
[
GMET
, "visibility"]
Supplemental references:
Group membership:
DIMENSION
LIGHTING_AND_VISIBILITY
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